Byeong-ki Ahn

Soon after Ji-won gets a new cell phone, her friend's young daughter, Yeong-ju, puts it to her ear and immediately begins screaming in terror... (imdb)

New student Yoo-Jin encounters the typical issues that newcomers face when entering unfamiliar territory. Harassed at school, she teams up with the other taunted students and casts a spell on her bully peers. But as the game they are playing escalates, its stakes rise to monstrous proportions, putting Yoo-Jin, her allies, and enemies at risk. (cduniverse.com)

Seven friends will die one by one for protecting a terrible secret. Can a vengeful spirit be stopped? (imdb)

Se-jin, a young woman who lives in an old apartment in a Seoul suburb, amuses herself by observing the windows of the apartments on the other side. One day, she notices that the lights of some of these apartments are turned off at the very same time. She begins to suspect that this pattern is somehow related to a series of mysterious deaths in the neighborhood. She becomes more and more deeply involved as she attempts to solve the mystery. (imdb)

A group of friends go through a series of horrifying events. A suicide that occurred two years earlier is revealed. (themoviedb)

Lina is sick in the hospital, she always thinks that she has a daughter; one day she attacked by a nurse and escapes from the hospital. She returns to her home after several years and plans to live with her imaginary daughter again. (themoviedb)

A novel writer discovers that her husband is released from prison and is after her and her son soon she takes a hideout in an old house where mysterious events begin to happen. (imdb)